نتایج جستجو برای: hill and valley regions

تعداد نتایج: 16856138  

Journal: :Computational Materials Science 2021

Abstract This paper seeks a vertex based approach to faceted anisotropy in phase field modelling of crystal growth. We examine Wulff shapes and the connection they have with formulations. On inspecting current approaches facets within we observe that there are two distinct approaches: one implements faceting purely kinetic parameter thus avoiding complications taking gradients discontinuous fun...

Journal: :یافته های نوین در علوم زیستی 0
فاطمه قاسمی fatemeh ghasemi department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه رضا حیدری reza heidari department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه رشید جامعی rashid jamei department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه لطیفه پوراکبر latifeh poorakbar department of biology, faculty of science, urmia university, urmia, iranگروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه

to assess nickel-induced toxicity in plants, zea mays seeds were germinated and cultured on nutrient solution with nickel concentrations of 0, 50, 100 and 200 μm for a period of two weeks. its effects on the growth, hill reaction and photosynthetic pigments content were then investigated. the fresh and dry weight of leaves and roots increased in 50 μm nickel, but decreased in 100 and 200 μm. th...

2013
Fazila Aseem Kathleen R. Miner Melissa Alperin Agnes Scott

Screening for Diabetic Retinopathy: Cost-Effectiveness Analysis of Direct Eye Examination versus Telescreening in Rio Grande Valley, Texas By Fazila Aseem Diabetic retinopathy poses a significant health concern in underserved and isolated, Hispanic-populated Rio Grande Valley, Texas. Hispanics have greater risk of contracting diabetic retinopathy compared to other races due to many reasons, inc...

2017
Francisco George João Valente Gonçalo F Augusto Andreia J Silva Natália Pereira Teresa Fernandes Paula Palminha Bárbara A Aguiar António Martins Estêvão Santos Paula Valente Etelvina Calé Ana Leça Paulo J Nogueira

We report a measles outbreak in two Portuguese health regions (Algarve and Lisbon and the Tagus Valley) since February 2017, and which by 31 May resulted in 28 confirmed cases, of which 16 were unvaccinated. Thirteen cases were healthcare workers. One unvaccinated teenager died. Genotype B3 was identified in 14 cases from both regions. This outbreak occurs after 12 years without endemic measles...

Journal: :تحقیقات جغرافیایی 0
غلام حسن جعفری دانشگاه زنجان اضغر رستم خانی دانشگاه زنجان

condition of contour lines in topographic maps, explains more geomorphologic issues such as effective processes in the land forms found in nature. change in the curvature of the transverse profile of a valley in mountainous areas, the peak of the mountain range, also reflect the geomorphologic features and expresses the tectonic events and climate changes occurring in the region. these changes ...

Journal: :ISPRS Int. J. Geo-Information 2017
Yalin Guo Qing Wang Min Fan

The arid valley is a unique type of ecological fragile landscape in the Hengduan Mountain Area, China. The boundary of the arid valley is one of the response indicators to mountainous climate change. Based on the meteorological data from 1999 to 2013 and the SPOT remote sensing images in 1999 and 2013 this study explored the response characteristics of the arid valley boundary to regional clima...

Journal: :The Australian journal of experimental biology and medical science 1982
I D Marshall G M Woodroofe S Hirsch

Pools of mosquitoes collected in the Murray Valley in February, 1974, during an encephalitis epidemic yielded 239 isolates of 11 distinct viruses. These included 39 isolates of MVE virus, an incriminated causative agent of encephalitis in man, and 111 isolates of Kunjin virus, a probable causative agent. An additional isolate of MVE virus was recovered from the serum of a white-faced heron, Ard...

Journal: :تحقیقات جغرافیایی 0
مریم عزتی دانشکده علوم دانشگاه گلستان، مریم آق آتابای دانشکده ی علوم دانشگاه گلستان مریم آق آتابای دانشکده ی علوم دانشگاه گلستان

study area is located in the central kopehdagh north of bojnurd and shirvan cities, between kakli and raz villages. aim of this research is separating high activity area from low activity. in this study, in order to evaluate rate of tectonic activity, stream length-gradient index (sl), ratio of valley floor width to valley height (vf), transverse topographic system (t), hypsometric integral (hi...

Journal: :Bulletin of environmental contamination and toxicology 2012
Xuyang Zhang Keith Starner Frank Spurlock

Chlorpyrifos is a common surface water contaminant in California, USA. We evaluated five years of chlorpyrifos use and surface water monitoring data in California's principal agricultural regions. Imperial County and three central coastal regions accounted for only 10% of chlorpyrifos statewide use, but displayed consistently high aquatic benchmark exceedances (13.2%-57.1%). In contrast, 90% of...

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